JP5349281B2 - Rotating electric machine - Google Patents

Rotating electric machine Download PDF

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Publication number
JP5349281B2
JP5349281B2 JP2009293030A JP2009293030A JP5349281B2 JP 5349281 B2 JP5349281 B2 JP 5349281B2 JP 2009293030 A JP2009293030 A JP 2009293030A JP 2009293030 A JP2009293030 A JP 2009293030A JP 5349281 B2 JP5349281 B2 JP 5349281B2
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Prior art keywords
coolant
coil end
discharge port
electrical machine
rotating electrical
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JP2011135698A (en
Inventor
明憲 峯村
啓仁 松井
尚樹 袴田
数哉 小貫
請司 香田
隆志 松本
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Denso Corp
Toyota Motor Corp
Soken Inc
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Denso Corp
Nippon Soken Inc
Toyota Motor Corp
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Application filed by Denso Corp, Nippon Soken Inc, Toyota Motor Corp filed Critical Denso Corp
Priority to JP2009293030A priority Critical patent/JP5349281B2/en
Priority to US12/975,982 priority patent/US8552603B2/en
Priority to DE102010061493.9A priority patent/DE102010061493B4/en
Priority to CN201010622533.5A priority patent/CN102111038B/en
Publication of JP2011135698A publication Critical patent/JP2011135698A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

An electric rotating machine is provided which includes a stator in which a coil is so wound as to have an coil end and a coolant channel. The coolant channel has defined therein a flow path through which coolant flows and a flow separator disposed in the flow path and a first and a second coolant outlet. The flow separator works to separate a flow of the coolant into at least a first and a second coolant streams. The first coolant outlet communicates with the first coolant stream, while the second coolant outlet communicates with the second coolant stream. The first and second coolant outlets drain the coolant to different portions of the coil end, thereby cooling almost the whole of the coil end even when the electric rotating machine is tilted undesirably.

Description

本発明は、回転電機（特にコイルエンド部）を冷却するための冷却構造に関する。   The present invention relates to a cooling structure for cooling a rotating electrical machine (particularly a coil end portion).

従来では、回転電機のコイルエンド部を冷却する技術の一例が開示されている（例えば特許文献１を参照）。この技術によれば、冷却液が所望の位置に供給されないために冷却効率が低くなるのを防止するため、冷却液の流路（冷却液が流れる経路を意味する。以下同じである。）となる樋の冷却液供給口にガイドを接続する構成とした（特許文献１の図３を参照）。この構成によれば、冷却液供給口から供給される冷却液をガイドに沿って所望の位置に流出させて供給することができる。   Conventionally, an example of the technique which cools the coil end part of a rotary electric machine is disclosed (for example, refer patent document 1). According to this technique, in order to prevent the cooling efficiency from being lowered because the cooling liquid is not supplied to a desired position, a cooling liquid flow path (meaning a path through which the cooling liquid flows; the same applies hereinafter). It was set as the structure which connects a guide to the cooling fluid supply port of a soot (refer FIG. 3 of patent document 1). According to this configuration, the coolant supplied from the coolant supply port can be supplied to the desired position along the guide.

一方、回転電機が何らかの要因で所定方向（特許文献１の図１における左右方向を意味する。以下では単に「軸傾斜方向」と呼ぶ。）に傾斜する場合がある。この傾斜に対処するため、特許文献１の図７に示すように、樋に形成する冷却液供給口を二列に千鳥配置する構成とした。この構成によれば、特許文献１の図８に示すように、樋が傾斜しても傾斜方向（左傾斜または右傾斜）に応じた列の冷却液供給口から冷却液を供給してコイルエンド部を冷却することができる。   On the other hand, the rotating electrical machine may tilt in a predetermined direction (meaning the left-right direction in FIG. 1 of Patent Document 1; hereinafter simply referred to as “axial tilt direction”) for some reason. In order to cope with this inclination, as shown in FIG. 7 of Patent Document 1, the coolant supply ports formed in the ridges are arranged in a staggered manner in two rows. According to this configuration, as shown in FIG. 8 of Patent Document 1, the coolant is supplied from the coolant supply ports in a row corresponding to the tilt direction (left tilt or right tilt) even if the heel is tilted, and the coil end The part can be cooled.

特許第４１６７８８６号公報Japanese Patent No. 4167886

しかし、回転電機は軸傾斜方向に限らず他方向に傾斜する場合もある。当該他方向は、例えば特許文献１の図１における前後方向（同文献の図２における左右方向を意味する。以下では単に「軸回転方向」と呼ぶ。）が該当する。同文献の図２に示すように、通路の供給口から弓状（アーチ状）に形成された樋の頂上（中央）に冷却液が供給される。よって、樋の傾斜方向に応じて一方側のコイルエンド部を冷却することができても、他方側のコイルエンド部を冷却することができない。   However, the rotating electrical machine is not limited to the axis tilt direction but may tilt in other directions. The other direction corresponds to, for example, the front-rear direction in FIG. 1 of Patent Document 1 (meaning the left-right direction in FIG. 2 of the same document. Hereinafter, simply referred to as “axial rotation direction”). As shown in FIG. 2 of the document, the coolant is supplied from the supply port of the passage to the top (center) of the ridge formed in an arcuate shape (arch shape). Therefore, even if the coil end portion on one side can be cooled according to the inclination direction of the flange, the coil end portion on the other side cannot be cooled.

また特許文献１の図１に示すように、コイルエンド部の外側面に対して直上の位置に冷却液供給口が形成されている。冷却液供給口に接続したガイドによって冷却液を供給するものの、同文献の図２に矢印で示すように冷却液はコイルエンド部の外側面に沿って流れ落ちる。ところが、例えば側面（同文献の図２に示すクロスハッチの部位）や内側面（外側面と反対側の面）のように、外側面以外の部位には冷却液が流れ落ちにくい。よって、コイルエンド部の側面や内側面を積極的に冷却することができない。   Further, as shown in FIG. 1 of Patent Document 1, a coolant supply port is formed at a position immediately above the outer surface of the coil end portion. Although the coolant is supplied by the guide connected to the coolant supply port, the coolant flows down along the outer surface of the coil end portion as shown by the arrow in FIG. However, for example, the coolant is unlikely to flow down to portions other than the outer surface, such as a side surface (cross hatched portion shown in FIG. 2 of the same document) and an inner surface (surface opposite to the outer surface). Therefore, the side surface and the inner side surface of the coil end portion cannot be actively cooled.

このように特許文献１の技術によれば、回転電機が特定方向（軸回転方向）に傾斜した場合には、コイルエンド部の一部を冷却することができず、コイルエンド部の全体からみれば冷却性能が低下するという問題があった。その一方、十分な量の冷却液を樋に供給すれば、特許文献１の図８に示される互いに隣接する二つの流出口列の双方から確実に冷却液を流出させることができ、コイルエンド部を冷却することが可能である。   Thus, according to the technique of Patent Document 1, when the rotating electrical machine is inclined in a specific direction (axial rotation direction), a part of the coil end portion cannot be cooled, and is seen from the entire coil end portion. In this case, there is a problem that the cooling performance is lowered. On the other hand, if a sufficient amount of cooling liquid is supplied to the trough, the cooling liquid can surely flow out from both of the two outlet rows adjacent to each other shown in FIG. Can be cooled.

本発明はこのような点に鑑みてなしたものであり、回転電機が特定方向に傾斜しても、コイルエンド部の冷却性能を維持向上できる回転電機を提供することを目的とする。   The present invention has been made in view of these points, and an object of the present invention is to provide a rotating electrical machine that can maintain and improve the cooling performance of the coil end portion even when the rotating electrical machine is inclined in a specific direction.

上記課題を解決するためになされた請求項１に記載の発明は、回転軸心を中心に回転自在なロータと、前記ロータの周面に対向する複数のスロットを有するステータと、前記複数のスロットにそれぞれ巻装されたコイルと、前記コイルがステータの軸方向端部位置から軸方向に張り出した領域としてのコイルエンド部と、を備える回転電機において、冷却液を供給する冷却液供給部と、前記冷却液供給部から供給される冷却液の流路となる樋とを有し、前記樋は、前記流路の途中に一以上設けられて冷却液を分流するとともに分流した冷却液を堰き止める仕切手段と、前記仕切手段で仕切られた仕切部位ごとに設けられて前記コイルエンド部に向けて冷却液を放出する放出口とを備えることを特徴とする。   The invention according to claim 1, which has been made to solve the above-described problems, includes a rotor that is rotatable around a rotation axis, a stator having a plurality of slots facing the circumferential surface of the rotor, and the plurality of slots. And a coil end portion as a region in which the coil extends in the axial direction from the axial end position of the stator, and a cooling liquid supply unit that supplies a cooling liquid, And a ridge that serves as a flow path for the cooling liquid supplied from the cooling liquid supply section, and the ridge is provided in the middle of the flow path to divide the cooling liquid and to block the diverted cooling liquid It is provided with a partition means, and the discharge port provided for every partition site | partition partitioned by the said partition means, and discharge | releases a cooling fluid toward the said coil end part, It is characterized by the above-mentioned.

この構成によれば、仕切手段は二つの機能を有する。すなわち、冷却液を分流する分流機能と、分流した冷却液を堰き止める堰止機能である。仕切手段の分流機能によって、冷却液供給部から供給される冷却液が複数の流路に分流される。分流された冷却液は仕切手段の堰止機能によって堰き止められるが、仕切部位ごとに設けられた放出口から放出される。コイルエンド部について冷却したい所望の部位に冷却液が流れるように、仕切部位ごとの放出口を適切に設定することで、コイルエンド部のほぼ全体を冷却することができる。仮に回転電機が特定方向に傾斜した場合でも、冷却液供給部から供給される冷却液は仕切手段で分流され、仕切部位ごとの放出口から放出されるので、コイルエンド部のほぼ全体を冷却することができる。   According to this configuration, the partition means has two functions. That is, there are a diversion function for diverting the coolant and a damming function for damming the diverted coolant. The cooling liquid supplied from the cooling liquid supply unit is divided into a plurality of flow paths by the branching function of the partitioning means. The diverted coolant is dammed by the damming function of the partitioning means, but is discharged from the discharge port provided for each partitioning part. It is possible to cool almost the entire coil end part by appropriately setting the discharge port for each partition part so that the coolant flows to a desired part to be cooled about the coil end part. Even if the rotating electrical machine is inclined in a specific direction, the cooling liquid supplied from the cooling liquid supply unit is diverted by the partitioning means and discharged from the discharge port for each partitioning part, so that almost the entire coil end part is cooled. be able to.

請求項２に記載の発明は、前記仕切手段は、所定の高さを有する板材で形成することを特徴とする。所定の高さは任意に設定可能であるが、例えば樋の壁面とほぼ同じ高さで設定してもよく、当該壁面より低い高さで設定してもよい。この構成によれば、簡単な構成で仕切手段の分流機能と堰止機能とを実現できる。また、壁面より低い高さで設定した場合には、多量の冷却液が供給されたときに当該壁面を超えて他の仕切部位に流れるので、各仕切部位に冷却液を有効に配分することができる。   The invention according to claim 2 is characterized in that the partition means is formed of a plate material having a predetermined height. Although the predetermined height can be arbitrarily set, for example, it may be set at substantially the same height as the wall surface of the bag, or may be set at a height lower than the wall surface. According to this configuration, it is possible to realize the branching function and the damming function of the partition means with a simple configuration. In addition, when set at a height lower than the wall surface, when a large amount of cooling liquid is supplied, it flows over the wall surface to other partition parts, so that the coolant can be effectively distributed to each partition part. it can.

請求項３に記載の発明は、前記仕切手段は、前記樋を複数段の階段状に形成するとともに、冷却液が貯留可能な程度に段部を傾斜させることを特徴とする。見方を変えれば、側面から見る形状がノコギリ刃状となるように形成する。段部の傾斜角は任意に設定可能であるが、冷却液が仕切部位に所望の貯留容量（放出口から冷却液を放出しない場合の容量を意味する。以下同じ。）以上に貯留できる程度の角度を設定する。この構成によれば、簡単な構成で仕切手段の分流機能と堰止機能とを実現できる。   The invention according to claim 3 is characterized in that the partitioning means forms the ridges in a plurality of steps, and inclines the steps so that the coolant can be stored. If the view is changed, the shape seen from the side is a saw blade. The inclination angle of the step portion can be arbitrarily set, but the cooling liquid can be stored in the partitioning portion at a desired storage capacity (meaning the capacity when the cooling liquid is not discharged from the discharge port. The same applies hereinafter). Set the angle. According to this configuration, it is possible to realize the branching function and the damming function of the partition means with a simple configuration.

請求項４に記載の発明は、前記放出口は、前記樋の側面部に一つ以上設けられていることを特徴とする。この構成によれば、樋の側面部にある放出口から冷却液が放出されるので、主にコイルエンド部の側面や内側面に流れ落ちるとともに、外側面にも流れ落ちる。したがって、コイルエンド部の全体を冷却することができる。   The invention according to claim 4 is characterized in that one or more of the discharge ports are provided in a side surface portion of the bag. According to this configuration, since the cooling liquid is discharged from the discharge port in the side surface portion of the bag, the coolant flows mainly to the side surface and the inner surface of the coil end portion, and also flows to the outer surface. Therefore, the whole coil end part can be cooled.

請求項５に記載の発明は、前記樋の下部であって、かつ、前記放出口よりも下方に設けられるひさし部（庇部）を有することを特徴とする。この構成によれば、放出口から放出されず樋を流れる冷却液がひさし部を伝って、コイルエンド部の下方部位に流れ落ちる。冷却液がコイルエンド部の下方部位に直接当たるので、当該下方部位を上方部位と同様に冷却することができる。   The invention according to claim 5 is characterized in that it has a eaves part (saddle part) provided at a lower part of the heel and below the discharge port. According to this configuration, the coolant flowing through the eaves without being discharged from the discharge port flows through the eaves portion and flows down to the lower portion of the coil end portion. Since the coolant directly hits the lower part of the coil end portion, the lower part can be cooled in the same manner as the upper part.

請求項６に記載の発明は、前記樋には、前記冷却液供給部から前記樋の頂点付近部に冷却液を誘導する誘導路を有することを特徴とする。この構成によれば、回転電機が特定方向に傾斜しても、冷却液供給部から供給される冷却液を確実に樋に流すことができる。   The invention described in claim 6 is characterized in that the saddle has a guide path for guiding the coolant from the coolant supply part to a vicinity of the apex of the saddle. According to this configuration, even when the rotating electrical machine is inclined in a specific direction, the coolant supplied from the coolant supply unit can be reliably flowed to the ridge.

本発明にかかる回転電機の構成例を示す断面図である。It is sectional drawing which shows the structural example of the rotary electric machine concerning this invention. 図１に示すＡ−Ａ線矢視の断面図である。It is sectional drawing of the AA arrow shown in FIG. 冷却液の流路となる樋の第１構成例を示す図である。It is a figure which shows the 1st structural example of the soot used as the flow path of a cooling fluid. 図３に示す樋による冷却液の流下例を説明する図である。It is a figure explaining the example of the flowing-down of the cooling liquid by the spear shown in FIG. 樋の側面部に設ける放出口による冷却態様を示す部分断面図である。It is a fragmentary sectional view which shows the cooling aspect by the discharge port provided in the side part of a ridge. 図５に示す樋による冷却液の流下例を説明する図である。It is a figure explaining the example of the flowing-down of the cooling liquid by the spear shown in FIG. 樋の第２構成例を示す図である。It is a figure which shows the 2nd structural example of a bag. 樋の第３構成例を示す図である。It is a figure which shows the 3rd structural example of a kite. 樋の側面部と底面部とにそれぞれ設ける放出口による冷却態様を示す部分断面図である。It is a fragmentary sectional view which shows the cooling mode by the discharge port provided in the side part and bottom face part of a bag, respectively. 樋の第４構成例を示す図である。It is a figure which shows the 4th structural example of a bag.

以下、本発明を実施するための形態について、図面に基づいて説明する。   Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

〔実施の形態１〕
実施の形態１は図１〜図６を参照しながら説明する。図１には本発明にかかる回転電機の構成例を断面図で示す。図２には図１に示すＡ−Ａ線矢視の断面図を拡大して示す。図３には冷却液の流路となる樋の第１構成例を示す。図４には図３に示す樋による冷却液の流下例を示す。図５には樋の側面部に放出口を備える例を部分断面図で示す。図６には図５に示す樋による冷却液の流下例を示す。なお、上下左右等の方向を示すときは該当する図面の記載に従う。また、冷却液の流下は自重によって生じる。 [Embodiment 1]
The first embodiment will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a configuration example of a rotating electrical machine according to the present invention. 2 is an enlarged cross-sectional view taken along line AA shown in FIG. FIG. 3 shows a first configuration example of the soot that becomes the flow path of the coolant. FIG. 4 shows an example of cooling liquid flowing down by the soot shown in FIG. FIG. 5 is a partial cross-sectional view showing an example in which a discharge port is provided on the side surface of the bag. FIG. 6 shows an example of the cooling liquid flowing down by the soot shown in FIG. In addition, when showing directions, such as up and down, right and left, follow description of a corresponding drawing. In addition, the coolant flows down due to its own weight.

まず、図１に示す回転電機Ｍは、電動機や発電機等として用いられる。この回転電機Ｍは、ケーシング２（フレームやハウジング等）の内部に、ステータ６（固定子），ロータ８（回転子），回転軸９（主軸），コイルＣ１，樋３，供給路４などを有する。ケーシング２の外部には、ポンプ１０や、図示しない冷却装置（例えばオイルクーラー等）などを有する。   First, the rotating electrical machine M shown in FIG. 1 is used as an electric motor, a generator, or the like. The rotating electrical machine M includes a stator 6 (stator), a rotor 8 (rotor), a rotating shaft 9 (main shaft), coils C1, 樋 3, a supply path 4 and the like inside a casing 2 (frame, housing, etc.). Have. Outside the casing 2, there are a pump 10 and a cooling device (not shown) such as an oil cooler.

ロータ８は、回転軸心（図１の構成例では回転軸９）を中心に回転自在に構成する。回転軸９はベアリング等を介して回転自在に構成する。図１の構成例ではロータ８と回転軸９とを一体化しているが、回転軸９にロータ８を固定手段（ネジやボルト等の固定用部材を用いた固定や、溶接や接着等による固定など）で固定してもよく、他の構成でもよい。いずれの構成にせよ、ロータ８と回転軸９とが一体的に回転すればよい。   The rotor 8 is configured to be rotatable about a rotation axis (rotation shaft 9 in the configuration example of FIG. 1). The rotating shaft 9 is configured to be rotatable through a bearing or the like. In the configuration example of FIG. 1, the rotor 8 and the rotary shaft 9 are integrated, but the rotor 8 is fixed to the rotary shaft 9 by fixing means (fixing using a fixing member such as a screw or a bolt, or fixing by welding or bonding). Etc.) or other configurations. In any configuration, the rotor 8 and the rotating shaft 9 only need to rotate integrally.

ロータ８の周面に対向して、電磁石（あるいは永久磁石）等が用いられるステータ６が配置される。このステータ６には、櫛状に形成されるティース５を有する。このティース５相互間に形成される空間、すなわち複数のスロット（図示せず）には各々ステータコイル（電機子巻線）となるコイルＣ１を巻きつける。巻装する際にコイルＣ１を折り返す必要があり、この折り返しのためにコイルＣ１がステータ６の軸方向（図１では左右方向）端部位置から軸方向に張り出した領域がコイルエンド部１となる。なお、巻装後のコイルＣ１を単体で見るとドーナツ状になり、両端部にコイルエンド部１が位置する。   A stator 6 using an electromagnet (or a permanent magnet) or the like is disposed opposite to the peripheral surface of the rotor 8. The stator 6 has teeth 5 formed in a comb shape. Coils C1 serving as stator coils (armature windings) are wound around spaces formed between the teeth 5, that is, a plurality of slots (not shown). When winding, the coil C1 needs to be folded back, and for this folding, a region where the coil C1 projects in the axial direction from the end position of the stator 6 in the axial direction (left-right direction in FIG. 1) becomes the coil end portion 1. . In addition, when coil C1 after winding is seen alone, it becomes a donut shape, and coil end portions 1 are located at both ends.

図１におけるケーシング２の内側上部（回転電機Ｍの頂上部）には、ポンプ１０から供給される冷却液を樋３に供給するための供給路４が設けられている。供給路４は円筒状に形成されており、一以上の供給口４ａが設けられている。供給口４ａは樋３の上方に位置して形成され、樋３を流れる冷却液をコイルエンド部１に向けて落下させる。図１に示す直線状の矢印Ｆ「→」は冷却液の流下経路を示す。この矢印Ｆ「→」は図２以降の各図でも同様である。この樋３の構成によれば、冷却液はポンプ１０から供給路４を通り、供給口４ａを経て樋３に流れ落ち、さらにはコイルエンド部１に落下する。なお、「冷却液供給部」には供給路４およびポンプ１０を含む。   A supply path 4 for supplying the coolant supplied from the pump 10 to the eaves 3 is provided on the inner upper portion of the casing 2 in FIG. 1 (the top of the rotating electrical machine M). The supply path 4 is formed in a cylindrical shape and is provided with one or more supply ports 4a. The supply port 4 a is formed above the tub 3 and drops the coolant flowing through the tub 3 toward the coil end portion 1. A straight arrow F “→” shown in FIG. 1 indicates a flow path of the coolant. This arrow F “→” is the same in each figure after FIG. According to the configuration of the flange 3, the coolant flows from the pump 10 through the supply path 4, flows down to the flange 3 through the supply port 4 a, and further drops to the coil end portion 1. The “cooling liquid supply unit” includes the supply path 4 and the pump 10.

樋３は、コイルエンド部１ごとに対応して二つ設けられ、供給路４とコイルエンド部１との間に配置される。二つの樋３は、鏡像（対称的）に形成される点を除いて、同一の構造である。樋３の具体的な構成例について、図２および図３を参照しながら説明する。なお、図３（ａ）には平面図を示す。図３（ｂ）には図３（ａ）に示すＢ−Ｂ矢視の断面図を示す。図３（ｃ）には図３（ａ）に示すＣ矢視の側面図を示す。図３（ｄ）および図３（ｅ）には図３（ａ）に示すＤ−Ｄ矢視の断面図を示す。   Two hooks 3 are provided corresponding to each coil end portion 1, and are disposed between the supply path 4 and the coil end portion 1. The two ridges 3 have the same structure except that they are formed in a mirror image (symmetrical). A specific configuration example of the bag 3 will be described with reference to FIGS. 2 and 3. FIG. 3A shows a plan view. FIG. 3B is a cross-sectional view taken along the line BB shown in FIG. FIG. 3C shows a side view taken along the arrow C shown in FIG. 3D and 3E are cross-sectional views taken along line DD shown in FIG.

まず図２に示すように、コイルエンド部１の外周形状に沿って、樋３は横から見て弓状に形成される。また、樋３には、供給路４から樋３の頂点付近部に冷却液を誘導する誘導路１４を有する。   First, as shown in FIG. 2, along the outer peripheral shape of the coil end portion 1, the flange 3 is formed in an arc shape when viewed from the side. In addition, the eaves 3 have a guide path 14 for guiding the coolant from the supply path 4 to the vicinity of the apex of the eaves 3.

次に図３（ａ）および図３（ｂ）に示すように、樋３は本体（すなわち側面部３ａおよび底面部３ｂ）のほかに、仕切部１２，ひさし部１３などを有する。これらの要素のうち、仕切部１２は「仕切手段」に相当し、冷却液を分流するとともに分流した冷却液を堰き止める。仕切部１２は、分流部１２ａおよび堰止部１２ｂを有する。分流部１２ａが冷却液を分流する分流機能を担い、堰止部１２ｂが分流部１２ａによって分流された冷却液を堰き止める堰止機能を担う。分流部１２ａおよび堰止部１２ｂは、所定の高さ（例えば側面部３ａとほぼ同じ高さ）を有する板材で一体化して形成する。   Next, as shown in FIGS. 3 (a) and 3 (b), the flange 3 has a partitioning portion 12, an eaves portion 13 and the like in addition to the main body (that is, the side surface portion 3a and the bottom surface portion 3b). Among these elements, the partitioning portion 12 corresponds to “partitioning means”, and divides the coolant and dams the split coolant. The partition part 12 has a flow dividing part 12a and a damming part 12b. The diverter 12a serves as a diverting function for diverting the cooling liquid, and the damming part 12b serves as a damming function for damming the cooling liquid diverted by the diverting part 12a. The flow dividing portion 12a and the blocking portion 12b are integrally formed with a plate material having a predetermined height (for example, substantially the same height as the side surface portion 3a).

上述した分流部１２ａ，堰止部１２ｂおよび樋３本体で囲まれた部位（区画）は、仕切部位２０に相当する。仕切部位２０には、コイルエンド部１に向けて冷却液を放出する放出口１１を有する。図３（ｃ）には側面部３ａに放出口１１を形成した例を示し、形成位置に応じて左放出口１１ａと右放出口１１ｂとに分けられる。図２や図４に示すように、左放出口１１ａから放出される冷却液はコイルエンド部１の左半分側を落ちて伝いながら冷却する。このため、コイルエンド部１の左側部位Ｓ１，Ｓ２が冷却される。同様にして、右放出口１１ｂから放出される冷却液はコイルエンド部１の右半分側に落ちて伝いながら冷却する。このため、コイルエンド部１の右側部位Ｓ３，Ｓ４が冷却される。   The above-described part (partition) surrounded by the flow dividing part 12a, the blocking part 12b, and the main body of the ridge 3 corresponds to the partition part 20. The partition portion 20 has a discharge port 11 through which the coolant is discharged toward the coil end portion 1. FIG. 3C shows an example in which the discharge port 11 is formed in the side surface portion 3a, and it is divided into a left discharge port 11a and a right discharge port 11b according to the formation position. As shown in FIG. 2 and FIG. 4, the cooling liquid discharged from the left discharge port 11 a cools down along the left half side of the coil end portion 1. For this reason, the left side portions S1 and S2 of the coil end portion 1 are cooled. Similarly, the cooling liquid discharged from the right discharge port 11b falls to the right half side of the coil end portion 1 and cools while being transmitted. For this reason, right side part S3, S4 of the coil end part 1 is cooled.

上述した左放出口１１ａと右放出口１１ｂとでは、回転電機Ｍの傾斜を考慮して放出口１１の形態を異ならせるのが望ましい。放出口１１を異ならせる形態は任意に設定可能であるが、例えば円形や楕円形等の形状、形成する個数、仕切部位２０ごとの放出口１１を合計した開口面積等を異ならせる。軸回転方向に傾斜せず傾斜角が０度の通常姿勢と、軸回転方向に傾斜角θだけ傾斜する傾斜姿勢とで、左放出口１１ａと右放出口１１ｂとに流下する冷却液の液量に差ができるだけ少ないように異ならせるのが望ましい。   It is preferable that the left discharge port 11a and the right discharge port 11b described above have different shapes of the discharge port 11 in consideration of the inclination of the rotating electrical machine M. Although the form which makes the discharge port 11 different can be set arbitrarily, for example, shapes, such as circular and an ellipse, the number to form, the opening area which totaled the discharge port 11 for every partition part 20, etc. are varied. The amount of the coolant flowing down to the left discharge port 11a and the right discharge port 11b in the normal posture in which the tilt angle is 0 degree without tilting in the shaft rotation direction and the tilt posture in which the tilt angle θ is tilted in the shaft rotation direction. It is desirable to make them different so that the difference is as small as possible.

樋３の長手方向にかかる断面を図３（ｂ）に示したが、短手方向にかかる断面を図３（ｄ）に示す。当該図３（ｄ）に示す樋３は、ひさし部１３にかかる部分の断面形状（すなわち凹形状）を表すが、ひさし部１３以外の樋３本体でも同等の形状で形成される。ここで、樋３の短手方向にかかる断面形状は任意に設定してよい。例えば図示する凹形状に限らず、半円形状，Ｖ字形状，Ｗ字形状の形状などが該当する。ひさし部１３については、冷却液がコイルエンド部１の下方部位（特に下半分側）に落ちて伝わればよいので、図３（ｄ）の断面形状に限る必然性はない。そのため、例えば図３（ｅ）に示す断面形状はＬ字状に形成するか、あるいは破線で示す側面部３ｄのように実線で示す側面部３ａよりも低い高さで形成する。後者の場合は一定量を超える冷却液がひさし部１３を流れる場合、側面部３ｄを乗り越えてコイルエンド部１に向けて落下する。そのため、コイルエンド部１の下方部位を冷却するのに必要な容量を確保し、過剰分の冷却液でコイルエンド部１の上方部位（特に上半分側）を冷却することができる。   Although the cross section concerning the longitudinal direction of the collar 3 was shown in FIG.3 (b), the cross section concerning a transversal direction is shown in FIG.3 (d). The flange 3 shown in FIG. 3D represents the cross-sectional shape (that is, the concave shape) of the portion applied to the eaves portion 13, but the flange 3 main body other than the eaves portion 13 is formed in an equivalent shape. Here, you may set arbitrarily the cross-sectional shape concerning the transversal direction of the collar 3. For example, the shape is not limited to the concave shape shown in the figure, and may be a semicircular shape, a V shape, a W shape, or the like. The eaves portion 13 is not necessarily limited to the cross-sectional shape of FIG. 3D because the coolant only needs to fall and travel to the lower portion (particularly the lower half side) of the coil end portion 1. Therefore, for example, the cross-sectional shape shown in FIG. 3 (e) is formed in an L shape or is formed at a lower height than the side surface portion 3a indicated by the solid line, such as the side surface portion 3d indicated by the broken line. In the latter case, when a coolant exceeding a certain amount flows through the eaves portion 13, it falls over the side surface portion 3 d and falls toward the coil end portion 1. Therefore, a capacity necessary for cooling the lower part of the coil end part 1 can be secured, and the upper part (particularly the upper half side) of the coil end part 1 can be cooled with an excessive amount of coolant.

ひさし部１３は、樋３の下部であって、かつ、放出口１１よりも下方に設けられる。主に樋３の上側に設けられる放出口１１から放出されずに流れ伝ってきたる冷却液は、ひさし部１３を伝ってコイルエンド部１の下方部位に流れ落ちる。具体的な内容については、後述する（図６を参照）。   The eaves part 13 is provided below the eaves 3 and below the discharge port 11. The coolant that has flowed without being discharged from the discharge port 11 provided mainly on the upper side of the bowl 3 flows down to the lower part of the coil end portion 1 through the eaves portion 13. Specific contents will be described later (see FIG. 6).

上述のように構成された回転電機Ｍは、軸回転方向に傾斜せず傾斜角が０度の通常姿勢だけでなく、軸回転方向に傾斜角θだけ傾斜する傾斜姿勢になる場合がある。各姿勢において、冷却液による冷却態様について図４を参照しながら説明する。図４（ａ）には通常姿勢における冷却態様を示し、図４（ｂ）には図面左回りに傾斜角θだけ傾斜する傾斜姿勢における冷却態様を示す。   The rotating electrical machine M configured as described above may not only be inclined in the axis rotation direction but in a normal attitude with an inclination angle of 0 degrees, or may have an inclination attitude that is inclined in the axis rotation direction by the inclination angle θ. In each posture, the cooling mode by the coolant will be described with reference to FIG. FIG. 4A shows a cooling mode in a normal posture, and FIG. 4B shows a cooling mode in an inclined posture that is inclined counterclockwise by an inclination angle θ.

図４（ａ）に示す通常姿勢では、供給路４や樋３等も傾斜しない。そのため、樋３では左右均等に冷却液が流れ、コイルエンド部１の左側部位Ｓ５とコイルエンド部１の右側部位Ｓ６とにほぼ均等に流下する。また、ひさし部１３からも矢印Ｆａで示すように落下してコイルエンド部１の下方部位を流下する。したがって、コイルエンド部１の全体を冷却液で冷却することができる。   In the normal posture shown in FIG. 4A, the supply path 4 and the eaves 3 are not inclined. Therefore, in the eaves 3, the coolant flows evenly on the left and right, and flows down almost evenly to the left side portion S 5 of the coil end portion 1 and the right side portion S 6 of the coil end portion 1. Moreover, it falls from the eaves part 13 as shown by the arrow Fa, and flows down the lower part of the coil end part 1. Therefore, the entire coil end portion 1 can be cooled with the coolant.

図４（ｂ）に示す傾斜姿勢では、供給路４や樋３等も傾斜角θだけ傾斜する。この場合、供給路４から供給される冷却液は図３（ａ）に示すように分流部１２ａで分流される。分流部１２ａで分流された一方側の冷却液は堰き止められず、仕切部１２を備えない場合と同様に、図３（ｃ）に示すように左放出口１１ａから放出される。しかし、分流された他方側の冷却液が堰止部１２ｂで堰き止められ、堰き止められた冷却液は図３（ｃ）に示すように右放出口１１ｂから放出される。すなわち、冷却液を強制的に左放出口１１ａと右放出口１１ｂとに分けて、コイルエンド部１に向けて放出する。これによって図４（ｂ）に示すように、コイルエンド部１の左側部位Ｓ５とコイルエンド部１の右側部位Ｓ６とに流下する。左放出口１１ａの開口面積と、右放出口１１ｂの開口面積とを適切に調整すれば、左側部位Ｓ５と右側部位Ｓ６とに流下する冷却液の流量差が少なく抑えられる。したがって、回転電機Ｍが傾斜した場合でもコイルエンド部１の全体を冷却液で冷却する冷却性能を向上させることができる。   In the inclined posture shown in FIG. 4B, the supply path 4 and the eaves 3 are also inclined by the inclination angle θ. In this case, the coolant supplied from the supply path 4 is diverted by the diverter 12a as shown in FIG. As shown in FIG. 3C, the one-sided coolant that has been diverted by the diverter 12a is not dammed and is discharged from the left outlet 11a as shown in FIG. However, the separated coolant on the other side is blocked by the blocking portion 12b, and the blocked coolant is discharged from the right discharge port 11b as shown in FIG. That is, the cooling liquid is forcibly divided into the left discharge port 11 a and the right discharge port 11 b and discharged toward the coil end portion 1. As a result, as shown in FIG. 4 (b), it flows down to the left side portion S 5 of the coil end portion 1 and the right side portion S 6 of the coil end portion 1. By appropriately adjusting the opening area of the left discharge port 11a and the opening area of the right discharge port 11b, the difference in the flow rate of the coolant flowing down to the left side part S5 and the right side part S6 can be suppressed. Therefore, even when the rotating electrical machine M is inclined, the cooling performance for cooling the entire coil end portion 1 with the coolant can be improved.

図３（ｃ）に示すように、放出口１１は樋３の側面部３ａに備える構成とした。この構成により、コイルエンド部１を冷却液によって冷却する態様について、別の角度から見た図５を参照しながら説明する。図１の一部を拡大して示す図５において、樋３の放出口１１から放出される冷却液は、その多くが側面１ｂから内側面１ｃを経て落下する。放出される冷却液の一部は、その粘性によって側面部３ａから底面部３ｂの裏側に伝わり、外側面１ａから側面１ｂを経て内側面１ｃに至って落下する。したがって、樋３に設ける各放出口１１の開口面積の大きさをそれぞれ適切に調整することで、冷却液をコイルエンド部１のほぼ全面にゆき渡らせて冷却することができる。   As shown in FIG. 3C, the discharge port 11 is configured to be provided on the side surface portion 3 a of the ridge 3. With this configuration, an aspect of cooling the coil end portion 1 with the coolant will be described with reference to FIG. 5 viewed from another angle. In FIG. 5 which shows a part of FIG. 1 in an enlarged manner, most of the coolant discharged from the discharge port 11 of the bag 3 falls from the side surface 1b through the inner side surface 1c. A part of the discharged cooling liquid is transmitted from the side surface portion 3a to the back side of the bottom surface portion 3b due to its viscosity, and falls from the outer surface 1a through the side surface 1b to the inner surface 1c. Therefore, the cooling liquid can be spread over almost the entire surface of the coil end portion 1 and cooled by appropriately adjusting the size of the opening area of each discharge port 11 provided in the gutter 3.

冷却液は放出口１１で放出されない分は、図３等に示すように、ひさし部１３を流下する。ひさし部１３を流下した冷却液によってコイルエンド部１を冷却する態様について、図６を参照しながら説明する。図６において、放出口１１から放出された冷却液は矢印Ｆ「→」で示すようにコイルエンド部１を流下する。ところが、回転電機Ｍの稼働時にはコイルエンド部１の温度が上昇するために、コイルエンド部１を流下する冷却液は熱を吸収して上昇する。そのため、コイルエンド部１の下側部位Ｓ７では冷却液による冷却効果が低下し、下側部位Ｓ７よりも下方はさらに冷却効果が低下する。これに対して、ひさし部１３を流下してきた冷却液は、液温が低く維持されたままでコイルエンド部１の下方部（特に下半分側）に落ちて伝わる。したがって、コイルエンド部１の上方部位だけでなく下方部位も合わせた全体を冷却することができる。   As the cooling liquid is not discharged from the discharge port 11, it flows down the eaves portion 13 as shown in FIG. 3 and the like. A mode in which the coil end portion 1 is cooled by the coolant flowing down the eaves portion 13 will be described with reference to FIG. In FIG. 6, the cooling liquid discharged from the discharge port 11 flows down the coil end portion 1 as indicated by an arrow F “→”. However, since the temperature of the coil end portion 1 rises during the operation of the rotating electrical machine M, the coolant flowing down the coil end portion 1 absorbs heat and rises. Therefore, the cooling effect by the coolant is reduced in the lower part S7 of the coil end portion 1, and the cooling effect is further reduced below the lower part S7. On the other hand, the coolant that has flowed down the eaves part 13 is transferred to the lower part (particularly the lower half side) of the coil end part 1 while the liquid temperature is kept low. Therefore, not only the upper part of the coil end part 1 but also the whole lower part can be cooled.

上述した実施の形態１によれば、以下に示す各効果を得ることができる。まず請求項１に対応し、回転電機Ｍは、冷却液を供給する供給路４と、供給路４から供給される冷却液の流路となる樋３とを有する構成とした（図１を参照）。樋３は、流路の途中に設けられて冷却液を分流するとともに分流した冷却液を堰き止める仕切部１２と、仕切部１２で仕切られた仕切部位２０ごとに設けられてコイルエンド部１に向けて冷却液を放出する放出口１１とを備える構成とした（図３を参照）。この構成によれば、分流部１２ａによって分流された一部の冷却液は、仕切部１２の堰止部１２ｂによって堰き止められて放出口１１から放出される。コイルエンド部１について冷却したい所望の部位に冷却液が流れるように、仕切部位２０ごとの放出口１１を適切に設定することで、コイルエンド部１のほぼ全体を冷却することができる。仮に回転電機Ｍが軸回転方向に傾斜した場合でも、供給路４から供給される冷却液は仕切部１２で分流され、仕切部位２０ごとの放出口１１から放出されるので、図４（ｂ）に示すようにコイルエンド部１のほぼ全体を冷却することができる。したがって、冷却性能を向上させることができる。   According to the first embodiment described above, the following effects can be obtained. Corresponding to claim 1, the rotating electrical machine M has a configuration including a supply path 4 for supplying a coolant and a gutter 3 serving as a flow path for the coolant supplied from the supply path 4 (see FIG. 1). ). The eaves 3 are provided in the middle of the flow path to divide the cooling liquid and to dam the diverted cooling liquid, and to the coil end part 1 provided for each of the partition parts 20 partitioned by the partition part 12. It was set as the structure provided with the discharge port 11 which discharge | releases a cooling liquid toward (refer FIG. 3). According to this configuration, a part of the coolant diverted by the diversion part 12 a is dammed by the damming part 12 b of the partition part 12 and discharged from the discharge port 11. By appropriately setting the discharge port 11 for each partition part 20 so that the coolant flows to a desired part to be cooled with respect to the coil end part 1, almost the entire coil end part 1 can be cooled. Even if the rotating electrical machine M is inclined in the axial rotation direction, the coolant supplied from the supply path 4 is diverted by the partition part 12 and discharged from the discharge port 11 for each partition part 20, so that FIG. As shown in FIG. 3, almost the entire coil end portion 1 can be cooled. Therefore, the cooling performance can be improved.

請求項２に対応し、仕切部１２（すなわち分流部１２ａおよび堰止部１２ｂ）は、所定の高さを有する板材で形成する構成とした（図３を参照）。この構成によれば、簡単な構成で仕切部１２の分流部１２ａと堰止部１２ｂとを実現できる。また、側面部より低い高さで設定した場合には、多量の冷却液が供給されたときに当該側面部を超えて他の仕切部位２０に流れるので、各仕切部位２０に冷却液を有効に配分することができる。   Corresponding to claim 2, the partitioning portion 12 (that is, the flow dividing portion 12a and the damming portion 12b) is formed of a plate material having a predetermined height (see FIG. 3). According to this structure, the flow dividing part 12a and the damming part 12b of the partition part 12 are realizable with a simple structure. In addition, when the height is set lower than the side surface, when a large amount of cooling liquid is supplied, it flows to the other partition part 20 beyond the side part, so that the coolant is effectively applied to each partition part 20. Can be allocated.

請求項４に対応し、放出口１１は、樋３の側面部３ａに一つ以上設けられている構成とした（図２〜図４を参照）。この構成によれば、樋３の側面部３ａにある放出口１１から冷却液が放出されるので、主にコイルエンド部１の側面１ｂや内側面１ｃに流れ落ちるとともに、冷却液の粘性に応じて外側面１ａにも流れ落ちる。したがって、コイルエンド部１の全体を冷却することができる。   Corresponding to claim 4, one or more discharge ports 11 are provided in the side surface portion 3a of the ridge 3 (see FIGS. 2 to 4). According to this configuration, since the coolant is discharged from the discharge port 11 in the side surface portion 3a of the flange 3, the coolant flows mainly to the side surface 1b and the inner surface 1c of the coil end portion 1, and according to the viscosity of the coolant. It also flows down to the outer surface 1a. Therefore, the whole coil end part 1 can be cooled.

請求項５に対応し、樋３の下部であって、かつ、放出口１１よりも下方に設けられるひさし部１３を有する構成とした（図３および図６を参照）。この構成によれば、放出口１１から放出されず樋３を流れる冷却液がひさし部１３を伝って、コイルエンド部１の下方部位に流れ落ちる。冷却液がコイルエンド部１の下方部位に直接当たるので、当該下方部位を上方部位と同様に冷却することができる。したがって、特にコイルエンド部１の下方部位について冷却性能を向上させることができる。   Corresponding to the fifth aspect of the present invention, a configuration is provided in which the eaves portion 13 is provided at the lower portion of the flange 3 and below the discharge port 11 (see FIGS. 3 and 6). According to this configuration, the coolant flowing through the eaves 3 without being discharged from the discharge port 11 flows along the eaves portion 13 and flows down to the lower portion of the coil end portion 1. Since the coolant directly hits the lower part of the coil end portion 1, the lower part can be cooled in the same manner as the upper part. Accordingly, the cooling performance can be improved particularly for the lower part of the coil end portion 1.

請求項６に対応し、樋３には、供給路４から樋３の頂点付近部に冷却液を誘導する誘導路１４を有する構成とした（図３を参照）。この構成によれば、回転電機Ｍが軸回転方向（特定方向）に傾斜したとしても、供給路４から供給される冷却液を確実に樋３に流すことができる。   Corresponding to claim 6, the cage 3 is configured to have a guide path 14 for guiding the coolant from the supply path 4 to the vicinity of the apex of the basket 3 (see FIG. 3). According to this structure, even if the rotary electric machine M inclines in the shaft rotation direction (specific direction), the coolant supplied from the supply path 4 can be surely flowed to the eaves 3.

〔実施の形態２〕
実施の形態２は、実施の形態１と同様に回転電機Ｍに適用した例について説明する。当該実施の形態２は図７を参照しながら説明する。図７には、冷却液の流路となる樋の第２構成例を示す。具体的には、図７（ａ）には平面図を示す。図７（ｂ）には図７（ａ）に示すＢ−Ｂ矢視の断面図を示す。図７（ｃ）には図７（ａ）に示すＣ矢視の側面図を示す。なお、図示および説明を簡単にするため、実施の形態２では実施の形態１と異なる点について説明する。実施の形態１で用いた要素と同一の要素には同一の符号を付す。 [Embodiment 2]
In the second embodiment, an example applied to the rotating electrical machine M as in the first embodiment will be described. The second embodiment will be described with reference to FIG. In FIG. 7, the 2nd structural example of the soot used as the flow path of a cooling fluid is shown. Specifically, FIG. 7A shows a plan view. FIG. 7B shows a cross-sectional view taken along the line B-B shown in FIG. FIG. 7 (c) shows a side view taken along arrow C shown in FIG. 7 (a). For simplicity of illustration and description, the second embodiment will be described with respect to differences from the first embodiment. The same elements as those used in the first embodiment are denoted by the same reference numerals.

実施の形態２が実施の形態１と異なるのは、誘導路１４を無くした点と、樋の構成（構造）を変更した点である。後者の点において、図７に示す樋１５の構成例は、図３に示す樋３の構成例に代わるものである。図７（ａ）に示すように樋１５は、図面中央を中心としてほぼ左右対称となるように形成する。図示しないが、供給路４から供給される冷却液は、樋１５の図面中央部に導く。   The second embodiment is different from the first embodiment in that the guide path 14 is eliminated and the configuration (structure) of the kite is changed. In the latter point, the configuration example of the cage 15 shown in FIG. 7 is an alternative to the configuration example of the cage 3 shown in FIG. As shown in FIG. 7A, the flange 15 is formed so as to be substantially symmetrical with respect to the center of the drawing. Although not shown, the coolant supplied from the supply path 4 is guided to the center of the drawing of the flange 15.

図７（ａ）および図７（ｂ）において、樋１５は本体（すなわち側面部１５ａおよび底面部１５ｂ）のほかに、仕切部１２，ひさし部１３などを有する。仕切部１２とひさし部１３は、いずれも左右に対称的に一つずつ備える。仕切部１２が二つあるので、仕切部位２０も二つ有する。側面部１５ａに放出口１１を形成した例を図７（ｃ）に示す。図７（ａ）および図７（ｂ）との対照から明らかなように、左側の仕切部位２０には左放出口１１ａが設けられ、右側の仕切部位２０には右放出口１１ｂが設けられる。この構成によれば、図２や図４に示すように、左放出口１１ａから放出される冷却液はコイルエンド部１の左半分側を落ちて伝いながら冷却する。同様にして、右放出口１１ｂから放出される冷却液はコイルエンド部１の右半分側に落ちて伝いながら冷却する。   7 (a) and 7 (b), the flange 15 has a partition portion 12, an eaves portion 13 and the like in addition to the main body (that is, the side surface portion 15a and the bottom surface portion 15b). Each of the partition portion 12 and the eaves portion 13 is provided one by one symmetrically on the left and right. Since there are two partition parts 12, two partition parts 20 are also provided. An example in which the discharge port 11 is formed on the side surface portion 15a is shown in FIG. As is clear from the comparison with FIGS. 7A and 7B, the left partition part 20 is provided with a left discharge port 11a, and the right partition part 20 is provided with a right discharge port 11b. According to this configuration, as shown in FIGS. 2 and 4, the cooling liquid discharged from the left discharge port 11 a cools down while traveling down the left half side of the coil end portion 1. Similarly, the cooling liquid discharged from the right discharge port 11b falls to the right half side of the coil end portion 1 and cools while being transmitted.

上述した実施の形態２によれば、樋１５の中央部に導かれた冷却液は、仕切部１２によって二以上に分流されるので（図７（ｂ）を参照）、コイルエンド部１の別々の箇所に冷却液を流下させることができる（図７（ｃ）を参照）。この場合、図４（ａ）に示す回転電機Ｍの通常姿勢だけでなく、図４（ｂ）に示す傾斜姿勢であっても、コイルエンド部１の全体に冷却液を供給することができる。したがって、上述した実施の形態１と同様に作用するので、実施の形態１と同様の効果を得ることができる。   According to the second embodiment described above, the coolant guided to the central portion of the flange 15 is divided into two or more by the partitioning portion 12 (see FIG. 7B), so that the coil end portion 1 is separated. The coolant can be caused to flow down to the position (see FIG. 7C). In this case, the cooling liquid can be supplied to the entire coil end portion 1 not only in the normal posture of the rotating electrical machine M shown in FIG. 4A but also in the inclined posture shown in FIG. Therefore, since it acts similarly to Embodiment 1 mentioned above, the effect similar to Embodiment 1 can be acquired.

〔実施の形態３〕
実施の形態３は、実施の形態１と同様に回転電機Ｍに適用した例について説明する。当該実施の形態３は図８を参照しながら説明する。図８には、冷却液の流路となる樋の第３構成例を示す。具体的には、図８（ａ）には平面図を示す。図８（ｂ）には図８（ａ）に示すＢ−Ｂ矢視の断面図を示す。側面図は図３（ｃ）と同一であるので、図示を省略する。なお、図示および説明を簡単にするため、実施の形態３では実施の形態１と異なる点について説明する。実施の形態１で用いた要素と同一の要素には同一の符号を付す。 [Embodiment 3]
In the third embodiment, an example applied to the rotating electrical machine M as in the first embodiment will be described. The third embodiment will be described with reference to FIG. In FIG. 8, the 3rd structural example of the soot used as the flow path of a cooling fluid is shown. Specifically, FIG. 8A shows a plan view. FIG. 8B shows a cross-sectional view taken along the line B-B shown in FIG. Since the side view is the same as FIG. For simplicity of illustration and description, the third embodiment will be described with respect to differences from the first embodiment. The same elements as those used in the first embodiment are denoted by the same reference numerals.

実施の形態３が実施の形態１と異なるのは、樋の構成（構造）を変更した点である。図８に示す樋１６の構成例は、図３に示す樋３の構成例に代わるものである。図８（ａ）に
示すように樋１６は、実施の形態１で設けた側面部３ａ（本形態では側面部１６ａに相当）に加えて、底面部１６ｂにも放出口１１を設ける。具体的には、分流部１２ａによって分流される冷却液の流下経路に沿って、仕切部位２０と、仕切部位２０以外の部位とにそれぞれ一以上を設ける。仕切部位２０に設ける放出口１１と、仕切部位２０以外の部位に設ける放出口１１とでは形態（例えば円形や楕円形等の形状、形成する個数、合計した開口面積等）を異ならせるのが望ましい。 The third embodiment is different from the first embodiment in that the configuration (structure) of the bag is changed. The configuration example of the bag 16 shown in FIG. 8 replaces the configuration example of the bag 3 shown in FIG. As shown in FIG. 8 (a), in addition to the side surface portion 3a provided in the first embodiment (corresponding to the side surface portion 16a in this embodiment), the gutter 16 is provided with the discharge port 11 also in the bottom surface portion 16b. Specifically, one or more parts are provided in each of the partition part 20 and parts other than the partition part 20 along the flow path of the coolant divided by the branch part 12a. It is desirable that the discharge port 11 provided in the partition part 20 and the discharge port 11 provided in a part other than the partition part 20 have different forms (for example, a shape such as a circle or an ellipse, the number to be formed, the total opening area, etc.). .

上述した樋１６の構成によってコイルエンド部１を冷却する態様について、図９を参照しながら説明する。当該図９は図５に代わる断面図であり、樋１６の側面部１６ａに設けられた放出口１１から放出される冷却液は、側面１ｂから内側面１ｃを経て落下する。また樋１６の底面部１６ｂに設けられた放出口１１から放出される冷却液は、外側面１ａ側面１ｂを経て内側面１ｃに至り落下する。したがって、樋１６に設ける各放出口１１の開口面積の大きさをそれぞれ適切に調整することで、冷却液をコイルエンド部１のほぼ全面にゆき渡らせて冷却することができる。   The aspect which cools the coil end part 1 with the structure of the collar 16 mentioned above is demonstrated, referring FIG. FIG. 9 is a cross-sectional view in place of FIG. 5, and the coolant discharged from the discharge port 11 provided in the side surface portion 16 a of the gutter 16 falls from the side surface 1 b through the inner side surface 1 c. Further, the coolant discharged from the discharge port 11 provided in the bottom surface portion 16b of the bag 16 reaches the inner side surface 1c through the outer side surface 1a and the side surface 1b and falls. Therefore, the cooling liquid can be spread over almost the entire surface of the coil end portion 1 and cooled by appropriately adjusting the size of the opening area of each discharge port 11 provided in the gutter 16.

上述した実施の形態３によれば、樋１６の誘導路１４から導かれた冷却液は仕切部１２により二以上に分流されるので（図８（ａ）を参照）、底面部１６ｂに設ける放出口１１によってコイルエンド部１の別々の箇所に冷却液を流下させることができる（図８（ｂ）を参照）。この場合、図４（ａ）に示す回転電機Ｍの通常姿勢であっても、図４（ｂ）に示す傾斜姿勢であっても、コイルエンド部１の全体に冷却液を供給することができる。したがって、上述した実施の形態１と同様に作用するので、実施の形態１と同様の効果を得ることができる。   According to the above-described third embodiment, the coolant guided from the guide path 14 of the trough 16 is divided into two or more by the partition portion 12 (see FIG. 8A). The coolant can flow down to different locations of the coil end portion 1 through the outlet 11 (see FIG. 8B). In this case, the coolant can be supplied to the entire coil end portion 1 regardless of whether the rotating electrical machine M is in the normal posture shown in FIG. 4A or in the inclined posture shown in FIG. . Therefore, since it acts similarly to Embodiment 1 mentioned above, the effect similar to Embodiment 1 can be acquired.

〔実施の形態４〕
実施の形態４は、実施の形態１と同様に回転電機Ｍに適用した例について説明する。当該実施の形態４は図１０を参照しながら説明する。図１０には、冷却液の流路となる樋の第４構成例を示す。具体的には、図１０（ａ）には平面図を示す。図１０（ｂ）には図１０（ａ）に示すＢ−Ｂ矢視の断面図を示す。図１０（ｃ）には図１０（ａ）に示すＣ−Ｃ矢視の断面図を示す。図１０（ｄ）には図１０（ａ）に示すＣ矢視の側面図を示す。なお、図示および説明を簡単にするため、実施の形態４では実施の形態１と異なる点について説明する。実施の形態１で用いた要素と同一の要素には同一の符号を付す。 [Embodiment 4]
In the fourth embodiment, an example applied to the rotating electrical machine M as in the first embodiment will be described. The fourth embodiment will be described with reference to FIG. In FIG. 10, the 4th structural example of the soot used as the flow path of a cooling fluid is shown. Specifically, FIG. 10A shows a plan view. FIG. 10B shows a cross-sectional view taken along the line B-B shown in FIG. FIG. 10C shows a cross-sectional view taken along the line C-C shown in FIG. FIG. 10 (d) shows a side view taken along the arrow C shown in FIG. 10 (a). For ease of illustration and description, the fourth embodiment will be described with respect to differences from the first embodiment. The same elements as those used in the first embodiment are denoted by the same reference numerals.

実施の形態４が実施の形態１と異なるのは、樋の構成（構造）を変更した点である。図１０に示す樋１７の構成例は、図３に示す樋３の構成例に代わるものである。図１０（ａ）に示すように樋１７は、図面下側半分の領域内に仕切部１２を形成する。この仕切部１２は、図１０（ｂ）に示すように、複数段の階段状に形成するとともに、冷却液が貯留可能な程度に段部１２ｃを傾斜させる。また、側面（断面）から見る形状がノコギリ刃状となるように形成する。段部１２ｃの傾斜角（０度を含む）は任意に設定可能であるが、例えば冷却液が仕切部位に所望の貯留容量以上に貯留できる程度の角度を設定するのが望ましい。仕切部１２の角部（頂点部）と底面部１７ｂの上面との高低関係は任意に設定可能である。図１０（ｂ）の構成例では仕切部１２の角部が底面部１７ｂの上面よりも高い位置となるように設定したが、逆に仕切部１２の角部が底面部１７ｂの上面よりも低い位置となるように設定してもよい。仕切部１２によって分流されて堰き止められた冷却液は、図１０（ｄ）に示すように、側面部１７ａに設けられた放出口１１からコイルエンド部１に向けて放出される。この放出口１１は、図１０（ｄ）では形成位置に応じて中放出口１１ｃと右放出口１１ｂとが対象となる。   The fourth embodiment is different from the first embodiment in that the configuration (structure) of the bag is changed. The configuration example of the heel 17 shown in FIG. 10 is an alternative to the configuration example of the heel 3 shown in FIG. As shown in FIG. 10 (a), the flange 17 forms the partition portion 12 in the lower half region of the drawing. As shown in FIG. 10B, the partition 12 is formed in a plurality of steps, and the step 12c is inclined to the extent that the coolant can be stored. Moreover, it forms so that the shape seen from a side surface (section) may become a saw blade shape. The inclination angle (including 0 degrees) of the stepped portion 12c can be arbitrarily set. For example, it is desirable to set an angle at which the cooling liquid can be stored in the partition portion more than a desired storage capacity. The height relationship between the corner portion (vertex portion) of the partition portion 12 and the upper surface of the bottom surface portion 17b can be arbitrarily set. In the configuration example of FIG. 10B, the corner portion of the partition portion 12 is set to be higher than the upper surface of the bottom surface portion 17b. Conversely, the corner portion of the partition portion 12 is lower than the upper surface of the bottom surface portion 17b. You may set so that it may become a position. As shown in FIG. 10 (d), the coolant that has been diverted and dammed by the partition portion 12 is discharged toward the coil end portion 1 from the discharge port 11 provided in the side surface portion 17 a. In FIG. 10D, the discharge port 11 is targeted for the middle discharge port 11c and the right discharge port 11b according to the formation position.

一方、図１０（ａ）に示すように樋１７は、図面上側半分の領域内には何も設けず、底面部１７ｂのみである。図１０（ｃ）に示すように、当該図面上側半分の領域には、仕切部１２で分流された冷却液が流下する。底面部１７ｂの上面位置は適切に設定され、実線で示す位置や、二点鎖線で示す位置などが該当する。したがって、階段状に形成された仕切部１２のみで、分流機能と堰止機能とを兼ね備える。   On the other hand, as shown in FIG. 10 (a), the ridges 17 are not provided in the upper half region of the drawing and are only the bottom surface portion 17b. As shown in FIG. 10C, the coolant divided by the partition 12 flows down to the upper half region of the drawing. The upper surface position of the bottom surface part 17b is appropriately set, and a position indicated by a solid line, a position indicated by a two-dot chain line, and the like are applicable. Therefore, only the partition part 12 formed in the staircase shape has both a diversion function and a damming function.

上述した実施の形態４によれば、請求項３に対応し、仕切部１２は、樋１７を複数段の階段状に形成するとともに、冷却液が貯留可能な程度に段部１２ｃを傾斜させる構成とした（図１０を参照）。すなわち仕切部１２によって、樋１７の誘導路１４から導かれた冷却液は仕切部１２により二以上に分流して堰き止める（図１０（ｂ）を参照）、コイルエンド部１の別々の箇所に冷却液を流下させることができる（図１０（ｃ）を参照）。この場合、図４（ａ）に示す回転電機Ｍの通常姿勢だけでなく、図４（ｂ）に示す傾斜姿勢であっても、コイルエンド部１の全体に冷却液を供給することができる。この構成によれば、簡単な構成で仕切部１２の分流機能と堰止機能とを同時に実現できる。また、上述した実施の形態１と同様に作用するので、実施の形態１と同様の効果を得ることができる。   According to the fourth embodiment described above, corresponding to claim 3, the partitioning portion 12 is configured such that the flange 17 is formed in a plurality of steps and the stepped portion 12c is inclined to the extent that the coolant can be stored. (See FIG. 10). That is, the cooling liquid guided from the guide path 14 of the gutter 17 by the partitioning portion 12 is divided into two or more by the partitioning portion 12 and stopped (see FIG. 10B). The cooling liquid can be allowed to flow down (see FIG. 10C). In this case, the cooling liquid can be supplied to the entire coil end portion 1 not only in the normal posture of the rotating electrical machine M shown in FIG. 4A but also in the inclined posture shown in FIG. According to this configuration, the diversion function and the damming function of the partition portion 12 can be realized simultaneously with a simple configuration. Moreover, since it acts similarly to Embodiment 1 mentioned above, the effect similar to Embodiment 1 can be acquired.

〔他の実施の形態〕
以上では本発明を実施するための形態について実施の形態１〜４に従って説明したが、本発明は当該形態に何ら限定されるものではない。実施の形態１〜４のうちで二以上の形態の任意に組み合わせて実現してもよい。また、本発明の要旨を逸脱しない範囲内において種々なる形態で実施することもでき、例えば次に示す各形態を実現してもよい。 [Other Embodiments]
In the above, although the form for implementing this invention was demonstrated according to Embodiment 1-4, this invention is not limited to the said form at all. You may implement | achieve combining any 2 or more forms arbitrarily in Embodiment 1-4. The present invention can be implemented in various forms without departing from the gist of the present invention. For example, the following forms may be realized.

実施の形態１および実施の形態３では樋に一の仕切部１２を備える構成とし（図３，図８を参照）、実施の形態２および実施の形態４では樋に二の仕切部１２を備える構成とした（図７，図１０を参照）。これらの形態に代えて、実施の形態１および実施の形態３で二以上の仕切部１２を備える構成としてもよく、実施の形態２および実施の形態４で一または三以上の仕切部１２を備える構成としてもよい。すなわち、仕切部１２を一以上備えていれば、上述した実施の形態１〜４と同様の作用効果を得ることができる。   In Embodiment 1 and Embodiment 3, it is set as the structure provided with the one partition part 12 in a cage | basket (refer FIG. 3, FIG. 8), and the partition part 12 is provided in the cage | basket in Embodiment 2 and Embodiment 4. FIG. It was set as the structure (refer FIG. 7, FIG. 10). Instead of these forms, the first and third embodiments may be provided with two or more partition parts 12, and the second and fourth embodiments may comprise one or three or more partition parts 12. It is good also as a structure. That is, if one or more partitions 12 are provided, the same effects as those of the first to fourth embodiments described above can be obtained.

実施の形態１および実施の形態３で樋に備える仕切部１２は、分流部１２ａと堰止部１２ｂとを板材で一体に形成する構成とした（図３，図８を参照）。この形態に代えて、分流部１２ａと堰止部１２ｂとを別体に構成してもよく、板材以外の部材で構成してもよい。板材以外の部材は、例えば網状部材や、柵状部材（棒状部材をほぼ平行に並べて構成した部材）などが該当する。いずれの構成にせよ、分流部１２ａによる冷却液の分流機能と、堰止部１２ｂによる冷却液の堰止機能とがそれぞれ実現される条件を満たせばよい。これらの構成であっても、実施の形態１〜４と同様の作用効果を得ることができる。   In the first embodiment and the third embodiment, the partition portion 12 provided in the ridge has a structure in which the flow dividing portion 12a and the damming portion 12b are integrally formed of a plate material (see FIGS. 3 and 8). Instead of this form, the flow dividing portion 12a and the damming portion 12b may be configured separately, or may be configured by a member other than the plate material. Examples of the member other than the plate material include a net-like member and a fence-like member (a member formed by arranging rod-like members substantially in parallel). In any configuration, it is only necessary to satisfy the conditions for realizing the coolant diversion function by the diversion part 12a and the cooling liquid damming function by the damming part 12b. Even if it is these structures, the effect similar to Embodiment 1-4 can be acquired.

仕切部１２は、実施の形態１〜３では分流部１２ａと堰止部１２ｂとを板材で一体に形成する構成とし（図３，図７，図８を参照）、実施の形態４では複数段の階段状に形成して段部１２ｃを傾斜させる構成とした（図１０を参照）。この形態に限らず、分流機能と堰止機能とを一体または別体で備える他の形態で構成してもよい。他の形態は、例えば樋の底面部にかかる上面側に凹凸を形成する構成や、網状部材を用いて実現する等が該当する。他の形態であっても、実施の形態１〜４と同様の作用効果を得ることができる。   In the first to third embodiments, the partitioning portion 12 is configured such that the flow dividing portion 12a and the damming portion 12b are integrally formed of a plate material (see FIGS. 3, 7, and 8). The step portion 12c is inclined to form a step shape (see FIG. 10). You may comprise not only this form but the other form which equips a diversion function and a damming function integrally or separately. Other forms correspond to, for example, a configuration in which irregularities are formed on the upper surface side of the bottom surface portion of the ridge, and realization using a net-like member. Even if it is another form, the effect similar to Embodiment 1-4 can be acquired.

実施の形態１〜４では、供給路４は円筒形に形成する構成とした（図１，図２等を参照）。この形態に代えて、他の形状（例えば楕円筒形や、三角形以上の多角形に対応する多角筒形等）で形成する構成としてもよい。他の形状で構成した場合であっても、実施の形態１〜４と同様の作用効果を得ることができる。   In the first to fourth embodiments, the supply path 4 is formed in a cylindrical shape (see FIGS. 1 and 2). Instead of this form, it may be configured to be formed in another shape (for example, an elliptical cylindrical shape or a polygonal cylindrical shape corresponding to a polygon more than a triangle). Even if it is a case where it comprises with other shapes, the same operation effect as Embodiments 1-4 can be obtained.

実施の形態１〜４では、ポンプ１０から汲み上げる冷却液を直接的に供給路４に導く構成とした（図１を参照）。この形態に代えて、ポンプ１０と供給路４との間にタンクを介在させる構成としてもよい。すなわち、ポンプ１０から汲み上げる冷却液をタンクに一時的に貯留し、タンクの貯留量で発生する圧力によって冷却液を供給路４に導く。タンクに貯留される間は冷却液が自然冷却されるので、冷却液を強制的に冷却する冷却装置（例えばオイルクーラー等）が不要になる。回転電機Ｍにタンクを備える構成であっても、冷却液を確実に供給できるので、実施の形態１〜４と同様の作用効果を得ることができる。   In the first to fourth embodiments, the coolant pumped from the pump 10 is directly guided to the supply path 4 (see FIG. 1). Instead of this configuration, a tank may be interposed between the pump 10 and the supply path 4. That is, the coolant pumped up from the pump 10 is temporarily stored in the tank, and the coolant is guided to the supply path 4 by the pressure generated by the storage amount of the tank. Since the coolant is naturally cooled while being stored in the tank, a cooling device (for example, an oil cooler) that forcibly cools the coolant becomes unnecessary. Even in the configuration in which the rotating electrical machine M includes a tank, the coolant can be reliably supplied, so that the same effects as the first to fourth embodiments can be obtained.

Ｍ 回転電機
Ｃ１ コイル
１ コイルエンド部
１ａ 外側面
１ｂ 側面
１ｃ 内側面
２ ケーシング（フレーム，ハウジング）
３，１５，１６，１７ 樋
３ａ，１５ａ，１６ａ，１７ａ 側面部
３ｂ，１５ｂ，１６ｂ，１７ｂ 底面部
４ 供給路（冷却液供給部）
４ａ 供給口
５ ティース
６ ステータ
７ 磁石
８ ロータ
９ 回転軸
１０ ポンプ（冷却液供給部）
１１（１１ａ，１１ｂ，１１ｃ） 放出口
１２ 仕切部（分流機能および堰止機能）
１２ａ 分流部（分流機能）
１２ｂ 堰止部（堰止機能）
１２ｃ 段部
１３ ひさし部
１４ 誘導路
２０ 仕切部位 M Rotating electrical machine C1 Coil 1 Coil end 1a Outer side 1b Side 1c Inner side 2 Casing (frame, housing)
3, 15, 16, 17 樋 3a, 15a, 16a, 17a Side surface portion 3b, 15b, 16b, 17b Bottom surface portion 4 Supply path (coolant supply portion)
4a Supply port 5 Teeth 6 Stator 7 Magnet 8 Rotor 9 Rotating shaft 10 Pump (coolant supply part)
11 (11a, 11b, 11c) Discharge port 12 Partition (diversion function and damming function)
12a Dividing part (Diversion function)
12b Damping part (damming function)
12c Step part 13 Eaves part 14 Taxiway 20 Partition part

Claims (6)

回転軸心を中心に回転自在なロータと、前記ロータの周面に対向する複数のスロットを有するステータと、前記複数のスロットにそれぞれ巻装されたコイルと、前記コイルがステータの軸方向端部位置から軸方向に張り出した領域としてのコイルエンド部と、を備える回転電機において、
冷却液を供給する冷却液供給部と、
前記冷却液供給部から供給される冷却液の流路となる樋と、を有し、
前記樋は、前記流路の途中に一以上設けられて冷却液を分流するとともに分流した冷却液を堰き止める仕切手段と、前記仕切手段で仕切られた仕切部位ごとに設けられて前記コイルエンド部に向けて冷却液を放出する放出口と、
を備えることを特徴とする回転電機。 A rotor rotatable around a rotation axis, a stator having a plurality of slots opposed to the peripheral surface of the rotor, coils wound around the plurality of slots, and the coil in an axial end portion of the stator In a rotating electrical machine comprising a coil end portion as a region protruding in the axial direction from a position,
A coolant supply section for supplying a coolant,
And a trough that serves as a flow path for the coolant supplied from the coolant supply unit,
One or more ridges are provided in the middle of the flow path to divide the cooling liquid, and the partition means for damming the diverted cooling liquid; and the coil end portion provided for each partition portion partitioned by the partition means A discharge port for discharging the coolant toward
A rotating electric machine comprising: 前記仕切手段は、所定の高さを有する板材で形成することを特徴とする請求項１に記載の回転電機。   The rotating electrical machine according to claim 1, wherein the partitioning means is formed of a plate material having a predetermined height. 前記仕切手段は、前記樋を複数段の階段状に形成するとともに、冷却液が貯留可能な程度に段部を傾斜させることを特徴とする請求項１または２に記載の回転電機。   3. The rotating electrical machine according to claim 1, wherein the partitioning unit is formed with a plurality of steps in a step shape, and the step portion is inclined to the extent that the coolant can be stored. 前記放出口は、前記樋の側面部に一つ以上設けられていることを特徴とする請求項１乃至３のいずれか一項に記載の回転電機。   4. The rotating electrical machine according to claim 1, wherein at least one discharge port is provided on a side surface of the bag. 前記樋の下部であって、かつ、前記放出口よりも下方に設けられるひさし部を有することを特徴とする請求項１乃至４のいずれか一項に記載の回転電機。   5. The rotating electrical machine according to claim 1, further comprising an eaves portion provided at a lower portion of the ridge and below the discharge port. 前記樋には、前記冷却液供給部から前記樋の頂点付近部に冷却液を誘導する誘導路を有することを特徴とする請求項１乃至５のいずれか一項に記載の回転電機。   6. The rotating electrical machine according to claim 1, wherein the saddle has a guide path that guides the coolant from the coolant supply unit to a vicinity of the apex of the saddle.
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US8552603B2 (en) 2013-10-08
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US20110156508A1 (en) 2011-06-30
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JP2011135698A (en) 2011-07-07
CN102111038A (en) 2011-06-29

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